<template>
  <div>
    <div class="back">
      <el-form
        class="form"
        label-position="left"
        :model="form"
        :rules="rules"
        ref="form"
      >
        <p class="title">Welcome</p>
        <el-form-item prop="username">
          <el-input
            v-model="form.username"
            placeholder="请输入管理员账号"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            v-model="form.password"
            type="password"
            placeholder="请输入管理员密码"
          ></el-input>
        </el-form-item>
        <el-form-item>
          <el-button type="primary" style="width: 100%" @click="onSubmit()"
            >登录</el-button
          >
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import httpApi from '@/http'
export default {
  data() {
    return {
      form: {
        username: '',
        password: '',
      },
      rules: {
        username: [
          { required: true, message: '请填写用户名', trigger: 'blur' },
          {
            pattern: /^\w{3,15}$/,
            message: '3~15位字符，可以包含：数字、字母、下划线',
            trigger: 'blur',
          },
        ],
        password: [
          { required: true, message: '请填写用户名', trigger: 'blur' },
          {
            pattern: /^\w{6,15}$/,
            message: '6~15位字符，可以包含：数字、字母、下划线',
            trigger: 'blur',
          },
        ],
      },
    }
  },

  methods: {
    onSubmit() {
      // 调用相关API执行登录业务
      httpApi.AdminApi.login(this.form).then(res => {
        console.log('登录', res)
        if (res.data.code == 200) {
          // 登录成功后，需要将用户对象存入vuex
          // mutations中定义了一个方法：updateUserInfo()用于更新用户信息
          // 在此需要让vuex执行该方法，更新state中的user对象
          this.$store.commit('updateUserInfo', res.data.data.user)
          this.$store.commit('updateToken', res.data.data.token)

          this.$router.push('/home/index')
        } else {
          this.$message({
            message: '账号密码错误，请重新输入',
            type: 'error',
          })
          this.$refs['form'].resetFields() // 重置表单
        }
      })
    },
  },
}
</script>

<style scoped>
.form {
  display: block;
  width: 20%;
  position: absolute;
  top: 30%;
  left: 40%;
}
.form .title {
  text-align: center;
  font-size: 1.5em;
  color: white;
  margin-bottom: 20px;
}
.back {
  height: 100vh;
  background-image: linear-gradient(125deg, #e14040, #b050cd, #4842c9, #34828d);
  background-size: 500%;
  animation: animate 30s infinite;
}
@keyframes animate {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}
</style>
